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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">  FUSE: Filesystem in Userspace</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">  Copyright (C) 2001-2007  Miklos Szeredi &lt;miklos@szeredi.hu&gt;</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">  This program can be distributed under the terms of the GNU GPL.</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">  See the file COPYING.</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">/* This program does the mounting and unmounting of FUSE filesystems */</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#define _GNU_SOURCE </span><span class="comment">/* for clone */</span><span class="preprocessor"></span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;config.h&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;mount_util.h&quot;</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;ctype.h&gt;</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;getopt.h&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;errno.h&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;fcntl.h&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;pwd.h&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;paths.h&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;mntent.h&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;sys/wait.h&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;sys/stat.h&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;sys/mount.h&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;sys/fsuid.h&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;sys/utsname.h&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;sched.h&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &lt;stdbool.h&gt;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &lt;sys/vfs.h&gt;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#define FUSE_COMMFD_ENV         &quot;_FUSE_COMMFD&quot;</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#define FUSE_DEV &quot;/dev/fuse&quot;</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#ifndef MS_DIRSYNC</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#define MS_DIRSYNC 128</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor">#ifndef MS_REC</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#define MS_REC 16384</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#ifndef MS_PRIVATE</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#define MS_PRIVATE (1&lt;&lt;18)</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#ifndef UMOUNT_DETACH</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#define UMOUNT_DETACH   0x00000002      </span><span class="comment">/* Just detach from the tree */</span><span class="preprocessor"></span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor">#ifndef UMOUNT_NOFOLLOW</span></div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#define UMOUNT_NOFOLLOW 0x00000008      </span><span class="comment">/* Don&#39;t follow symlink on umount */</span><span class="preprocessor"></span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#ifndef UMOUNT_UNUSED</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#define UMOUNT_UNUSED   0x80000000      </span><span class="comment">/* Flag guaranteed to be unused */</span><span class="preprocessor"></span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *progname;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> user_allow_other = 0;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> mount_max = 1000;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> auto_unmount = 0;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *get_user_name(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;{</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keyword">struct </span>passwd *pw = getpwuid(getuid());</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <span class="keywordflow">if</span> (pw != NULL &amp;&amp; pw-&gt;pw_name != NULL)</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                <span class="keywordflow">return</span> pw-&gt;pw_name;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordflow">else</span> {</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: could not determine username\n&quot;</span>, progname);</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        }</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;}</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keyword">static</span> uid_t oldfsuid;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keyword">static</span> gid_t oldfsgid;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> drop_privs(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;{</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">if</span> (getuid() != 0) {</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                oldfsuid = setfsuid(getuid());</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                oldfsgid = setfsgid(getgid());</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        }</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;}</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> restore_privs(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;{</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="keywordflow">if</span> (getuid() != 0) {</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                setfsuid(oldfsuid);</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                setfsgid(oldfsgid);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        }</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;}</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="preprocessor">#ifndef IGNORE_MTAB</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment"> * Make sure that /etc/mtab is checked and updated atomically</span></div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> lock_umount(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;{</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *mtab_lock = _PATH_MOUNTED <span class="stringliteral">&quot;.fuselock&quot;</span>;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        <span class="keywordtype">int</span> mtablock;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        <span class="keyword">struct </span>stat mtab_stat;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="comment">/* /etc/mtab could be a symlink to /proc/mounts */</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keywordflow">if</span> (lstat(_PATH_MOUNTED, &amp;mtab_stat) == 0 &amp;&amp; S_ISLNK(mtab_stat.st_mode))</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        mtablock = open(mtab_lock, O_RDWR | O_CREAT, 0600);</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keywordflow">if</span> (mtablock == -1) {</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: unable to open fuse lock file: %s\n&quot;</span>,</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        }</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        res = lockf(mtablock, F_LOCK, 0);</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keywordflow">if</span> (res &lt; 0) {</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: error getting lock: %s\n&quot;</span>, progname,</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                        strerror(errno));</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                close(mtablock);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        }</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <span class="keywordflow">return</span> mtablock;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;}</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> unlock_umount(<span class="keywordtype">int</span> mtablock)</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;{</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <span class="keywordflow">if</span> (mtablock &gt;= 0) {</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                res = lockf(mtablock, F_ULOCK, 0);</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;                <span class="keywordflow">if</span> (res &lt; 0) {</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: error releasing lock: %s\n&quot;</span>,</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;                                progname, strerror(errno));</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                }</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                close(mtablock);</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        }</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;}</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> add_mount(<span class="keyword">const</span> <span class="keywordtype">char</span> *source, <span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> *type,</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                     <span class="keyword">const</span> <span class="keywordtype">char</span> *opts)</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;{</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keywordflow">return</span> fuse_mnt_add_mount(progname, source, mnt, type, opts);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;}</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> may_unmount(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keywordtype">int</span> quiet)</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;{</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        <span class="keyword">struct </span>mntent *entp;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        FILE *fp;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *user = NULL;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        <span class="keywordtype">char</span> uidstr[32];</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        <span class="keywordtype">unsigned</span> uidlen = 0;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        <span class="keywordtype">int</span> found;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *mtab = _PATH_MOUNTED;</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        user = get_user_name();</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <span class="keywordflow">if</span> (user == NULL)</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        fp = setmntent(mtab, <span class="stringliteral">&quot;r&quot;</span>);</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        <span class="keywordflow">if</span> (fp == NULL) {</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>, progname, mtab,</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;                        strerror(errno));</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        }</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        uidlen = sprintf(uidstr, <span class="stringliteral">&quot;%u&quot;</span>, getuid());</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        found = 0;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <span class="keywordflow">while</span> ((entp = getmntent(fp)) != NULL) {</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                <span class="keywordflow">if</span> (!found &amp;&amp; strcmp(entp-&gt;mnt_dir, mnt) == 0 &amp;&amp;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                    (strcmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuse&quot;</span>) == 0 ||</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                     strcmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuseblk&quot;</span>) == 0 ||</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                     strncmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuse.&quot;</span>, 5) == 0 ||</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;                     strncmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuseblk.&quot;</span>, 8) == 0)) {</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                        <span class="keywordtype">char</span> *p = strstr(entp-&gt;mnt_opts, <span class="stringliteral">&quot;user=&quot;</span>);</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                        <span class="keywordflow">if</span> (p &amp;&amp;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                            (p == entp-&gt;mnt_opts || *(p-1) == <span class="charliteral">&#39;,&#39;</span>) &amp;&amp;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                            strcmp(p + 5, user) == 0) {</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;                                found = 1;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                                <span class="keywordflow">break</span>;</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                        }</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                        <span class="comment">/* /etc/mtab is a link pointing to</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="comment">                           /proc/mounts: */</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                        <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((p =</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                                  strstr(entp-&gt;mnt_opts, <span class="stringliteral">&quot;user_id=&quot;</span>)) &amp;&amp;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;                                 (p == entp-&gt;mnt_opts ||</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;                                  *(p-1) == <span class="charliteral">&#39;,&#39;</span>) &amp;&amp;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;                                 strncmp(p + 8, uidstr, uidlen) == 0 &amp;&amp;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                                 (*(p+8+uidlen) == <span class="charliteral">&#39;,&#39;</span> ||</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                                  *(p+8+uidlen) == <span class="charliteral">&#39;\0&#39;</span>)) {</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;                                found = 1;</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                                <span class="keywordflow">break</span>;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;                        }</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                }</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        }</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        endmntent(fp);</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">if</span> (!found) {</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                <span class="keywordflow">if</span> (!quiet)</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                                <span class="stringliteral">&quot;%s: entry for %s not found in %s\n&quot;</span>,</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                                progname, mnt, mtab);</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        }</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;}</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment"> * Check whether the file specified in &quot;fusermount3 -u&quot; is really a</span></div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment"> * mountpoint and not a symlink.  This is necessary otherwise the user</span></div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment"> * could move the mountpoint away and replace it with a symlink</span></div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment"> * pointing to an arbitrary mount, thereby tricking fusermount3 into</span></div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment"> * unmounting that (umount(2) will follow symlinks).</span></div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment"> * This is the child process running in a separate mount namespace, so</span></div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment"> * we don&#39;t mess with the global namespace and if the process is</span></div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="comment"> * killed for any reason, mounts are automatically cleaned up.</span></div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment"> * First make sure nothing is propagated back into the parent</span></div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="comment"> * namespace by marking all mounts &quot;private&quot;.</span></div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="comment"> * Then bind mount parent onto a stable base where the user can&#39;t move</span></div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment"> * it around.</span></div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment"> * Finally check /proc/mounts for an entry matching the requested</span></div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment"> * mountpoint.  If it&#39;s found then we are OK, and the user can&#39;t move</span></div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment"> * it around within the parent directory as rename() will return</span></div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment"> * EBUSY.  Be careful to ignore any mounts that existed before the</span></div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment"> * bind.</span></div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> check_is_mount_child(<span class="keywordtype">void</span> *p)</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;{</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> **a = p;</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *last = a[0];</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *mnt = a[1];</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *type = a[2];</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *procmounts = <span class="stringliteral">&quot;/proc/mounts&quot;</span>;</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        <span class="keywordtype">int</span> found;</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        FILE *fp;</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        <span class="keyword">struct </span>mntent *entp;</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        <span class="keywordtype">int</span> count;</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        res = mount(<span class="stringliteral">&quot;&quot;</span>, <span class="stringliteral">&quot;/&quot;</span>, <span class="stringliteral">&quot;&quot;</span>, MS_PRIVATE | MS_REC, NULL);</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to mark mounts private: %s\n&quot;</span>,</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        }</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        fp = setmntent(procmounts, <span class="stringliteral">&quot;r&quot;</span>);</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;        <span class="keywordflow">if</span> (fp == NULL) {</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>, progname,</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;                        procmounts, strerror(errno));</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        }</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        count = 0;</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        <span class="keywordflow">while</span> (getmntent(fp) != NULL)</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                count++;</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;        endmntent(fp);</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;        fp = setmntent(procmounts, <span class="stringliteral">&quot;r&quot;</span>);</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        <span class="keywordflow">if</span> (fp == NULL) {</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>, progname,</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;                        procmounts, strerror(errno));</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        }</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;        res = mount(<span class="stringliteral">&quot;.&quot;</span>, <span class="stringliteral">&quot;/&quot;</span>, <span class="stringliteral">&quot;&quot;</span>, MS_BIND | MS_REC, NULL);</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to bind parent to /: %s\n&quot;</span>,</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        }</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        found = 0;</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <span class="keywordflow">while</span> ((entp = getmntent(fp)) != NULL) {</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;                <span class="keywordflow">if</span> (count &gt; 0) {</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;                        count--;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;                        <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;                }</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;                <span class="keywordflow">if</span> (entp-&gt;mnt_dir[0] == <span class="charliteral">&#39;/&#39;</span> &amp;&amp;</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;                    strcmp(entp-&gt;mnt_dir + 1, last) == 0 &amp;&amp;</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;                    (!type || strcmp(entp-&gt;mnt_type, type) == 0)) {</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;                        found = 1;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;                }</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;        }</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        endmntent(fp);</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        <span class="keywordflow">if</span> (!found) {</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: %s not mounted\n&quot;</span>, progname, mnt);</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        }</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;}</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="keyword">static</span> pid_t clone_newns(<span class="keywordtype">void</span> *a)</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;{</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;        <span class="keywordtype">char</span> buf[131072];</div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        <span class="keywordtype">char</span> *stack = buf + (<span class="keyword">sizeof</span>(buf) / 2 - ((<span class="keywordtype">size_t</span>) buf &amp; 15));</div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="preprocessor">#ifdef __ia64__</span></div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        <span class="keyword">extern</span> <span class="keywordtype">int</span> __clone2(<span class="keywordtype">int</span> (*fn)(<span class="keywordtype">void</span> *),</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;                            <span class="keywordtype">void</span> *child_stack_base, <span class="keywordtype">size_t</span> stack_size,</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;                            <span class="keywordtype">int</span> flags, <span class="keywordtype">void</span> *arg, pid_t *ptid,</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;                            <span class="keywordtype">void</span> *tls, pid_t *ctid);</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        <span class="keywordflow">return</span> __clone2(check_is_mount_child, stack, <span class="keyword">sizeof</span>(buf) / 2,</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;                        CLONE_NEWNS, a, NULL, NULL, NULL);</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;        <span class="keywordflow">return</span> clone(check_is_mount_child, stack, CLONE_NEWNS, a);</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;}</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> check_is_mount(<span class="keyword">const</span> <span class="keywordtype">char</span> *last, <span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> *type)</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;{</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;        pid_t pid, p;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        <span class="keywordtype">int</span> status;</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *a[3] = { last, mnt, type };</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;        pid = clone_newns((<span class="keywordtype">void</span> *) a);</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        <span class="keywordflow">if</span> (pid == (pid_t) -1) {</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to clone namespace: %s\n&quot;</span>,</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        }</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        p = waitpid(pid, &amp;status, __WCLONE);</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        <span class="keywordflow">if</span> (p == (pid_t) -1) {</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: waitpid failed: %s\n&quot;</span>,</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        }</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        <span class="keywordflow">if</span> (!WIFEXITED(status)) {</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: child terminated abnormally (status %i)\n&quot;</span>,</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;                        progname, status);</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;        }</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        <span class="keywordflow">if</span> (WEXITSTATUS(status) != 0)</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;}</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> chdir_to_parent(<span class="keywordtype">char</span> *copy, <span class="keyword">const</span> <span class="keywordtype">char</span> **lastp)</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;{</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        <span class="keywordtype">char</span> *tmp;</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *parent;</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;        <span class="keywordtype">char</span> buf[65536];</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;        tmp = strrchr(copy, <span class="charliteral">&#39;/&#39;</span>);</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;        <span class="keywordflow">if</span> (tmp == NULL || tmp[1] == <span class="charliteral">&#39;\0&#39;</span>) {</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: internal error: invalid abs path: &lt;%s&gt;\n&quot;</span>,</div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;                        progname, copy);</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;        }</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;        <span class="keywordflow">if</span> (tmp != copy) {</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;                *tmp = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                parent = copy;</div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;                *lastp = tmp + 1;</div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (tmp[1] != <span class="charliteral">&#39;\0&#39;</span>) {</div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;                *lastp = tmp + 1;</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;                parent = <span class="stringliteral">&quot;/&quot;</span>;</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                *lastp = <span class="stringliteral">&quot;.&quot;</span>;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;                parent = <span class="stringliteral">&quot;/&quot;</span>;</div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;        }</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        res = chdir(parent);</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to chdir to %s: %s\n&quot;</span>,</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;                        progname, parent, strerror(errno));</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        }</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;        <span class="keywordflow">if</span> (getcwd(buf, <span class="keyword">sizeof</span>(buf)) == NULL) {</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to obtain current directory: %s\n&quot;</span>,</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;                        progname, strerror(errno));</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;        }</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;        <span class="keywordflow">if</span> (strcmp(buf, parent) != 0) {</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: mountpoint moved (%s -&gt; %s)\n&quot;</span>, progname,</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;                        parent, buf);</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;        }</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;}</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;<span class="comment">/* Check whether the kernel supports UMOUNT_NOFOLLOW flag */</span></div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> umount_nofollow_support(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;{</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        <span class="keywordtype">int</span> res = umount2(<span class="stringliteral">&quot;&quot;</span>, UMOUNT_UNUSED);</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;        <span class="keywordflow">if</span> (res != -1 || errno != EINVAL)</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        res = umount2(<span class="stringliteral">&quot;&quot;</span>, UMOUNT_NOFOLLOW);</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;        <span class="keywordflow">if</span> (res != -1 || errno != ENOENT)</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;        <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;}</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> unmount_fuse_locked(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keywordtype">int</span> quiet, <span class="keywordtype">int</span> lazy)</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;{</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        <span class="keywordtype">char</span> *copy;</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *last;</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        <span class="keywordtype">int</span> umount_flags = lazy ? UMOUNT_DETACH : 0;</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <span class="keywordflow">if</span> (getuid() != 0) {</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;                res = may_unmount(mnt, quiet);</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;                <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;        }</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        copy = strdup(mnt);</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        <span class="keywordflow">if</span> (copy == NULL) {</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        }</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        res = chdir_to_parent(copy, &amp;last);</div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;                <span class="keywordflow">goto</span> out;</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;        <span class="keywordflow">if</span> (umount_nofollow_support()) {</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;                umount_flags |= UMOUNT_NOFOLLOW;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;                res = check_is_mount(last, mnt, NULL);</div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;                <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;                        <span class="keywordflow">goto</span> out;</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        }</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        res = umount2(last, umount_flags);</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keywordflow">if</span> (res == -1 &amp;&amp; !quiet) {</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to unmount %s: %s\n&quot;</span>,</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;                        progname, mnt, strerror(errno));</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;        }</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;out:</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;        free(copy);</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;        res = chdir(<span class="stringliteral">&quot;/&quot;</span>);</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to chdir to &#39;/&#39;\n&quot;</span>, progname);</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        }</div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;</div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        <span class="keywordflow">return</span> fuse_mnt_remove_mount(progname, mnt);</div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;}</div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;</div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> unmount_fuse(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keywordtype">int</span> quiet, <span class="keywordtype">int</span> lazy)</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;{</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;        <span class="keywordtype">int</span> mtablock = lock_umount();</div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;        res = unmount_fuse_locked(mnt, quiet, lazy);</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        unlock_umount(mtablock);</div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <span class="keywordflow">return</span> res;</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;}</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> count_fuse_fs(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;{</div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        <span class="keyword">struct </span>mntent *entp;</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;        <span class="keywordtype">int</span> count = 0;</div><div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *mtab = _PATH_MOUNTED;</div><div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;        FILE *fp = setmntent(mtab, <span class="stringliteral">&quot;r&quot;</span>);</div><div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;        <span class="keywordflow">if</span> (fp == NULL) {</div><div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>, progname, mtab,</div><div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;                        strerror(errno));</div><div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;        }</div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;        <span class="keywordflow">while</span> ((entp = getmntent(fp)) != NULL) {</div><div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;                <span class="keywordflow">if</span> (strcmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuse&quot;</span>) == 0 ||</div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;                    strncmp(entp-&gt;mnt_type, <span class="stringliteral">&quot;fuse.&quot;</span>, 5) == 0)</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;                        count ++;</div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        }</div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;        endmntent(fp);</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        <span class="keywordflow">return</span> count;</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;}</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;</div><div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;<span class="preprocessor">#else </span><span class="comment">/* IGNORE_MTAB */</span><span class="preprocessor"></span></div><div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> count_fuse_fs(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;{</div><div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;}</div><div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;</div><div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> add_mount(<span class="keyword">const</span> <span class="keywordtype">char</span> *source, <span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> *type,</div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;                     <span class="keyword">const</span> <span class="keywordtype">char</span> *opts)</div><div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;{</div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;        (void) source;</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;        (void) mnt;</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        (void) type;</div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        (void) opts;</div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;}</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> unmount_fuse(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keywordtype">int</span> quiet, <span class="keywordtype">int</span> lazy)</div><div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;{</div><div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        (void) quiet;</div><div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;        <span class="keywordflow">return</span> fuse_mnt_umount(progname, mnt, mnt, lazy);</div><div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;}</div><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* IGNORE_MTAB */</span><span class="preprocessor"></span></div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;</div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> strip_line(<span class="keywordtype">char</span> *line)</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;{</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;        <span class="keywordtype">char</span> *s = strchr(line, <span class="charliteral">&#39;#&#39;</span>);</div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;        <span class="keywordflow">if</span> (s != NULL)</div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;                s[0] = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;        <span class="keywordflow">for</span> (s = line + strlen(line) - 1;</div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;             s &gt;= line &amp;&amp; isspace((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) *s); s--);</div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;        s[1] = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;        <span class="keywordflow">for</span> (s = line; isspace((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) *s); s++);</div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;        <span class="keywordflow">if</span> (s != line)</div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;                memmove(line, s, strlen(s)+1);</div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;}</div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;</div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> parse_line(<span class="keywordtype">char</span> *line, <span class="keywordtype">int</span> linenum)</div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;{</div><div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;        <span class="keywordtype">int</span> tmp;</div><div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        <span class="keywordflow">if</span> (strcmp(line, <span class="stringliteral">&quot;user_allow_other&quot;</span>) == 0)</div><div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;                user_allow_other = 1;</div><div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf(line, <span class="stringliteral">&quot;mount_max = %i&quot;</span>, &amp;tmp) == 1)</div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;                mount_max = tmp;</div><div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span>(line[0])</div><div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;                fprintf(stderr,</div><div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;                        <span class="stringliteral">&quot;%s: unknown parameter in %s at line %i: &#39;%s&#39;\n&quot;</span>,</div><div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;                        progname, FUSE_CONF, linenum, line);</div><div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;}</div><div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;</div><div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> read_conf(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;{</div><div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;        FILE *fp = fopen(FUSE_CONF, <span class="stringliteral">&quot;r&quot;</span>);</div><div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;        <span class="keywordflow">if</span> (fp != NULL) {</div><div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;                <span class="keywordtype">int</span> linenum = 1;</div><div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;                <span class="keywordtype">char</span> line[256];</div><div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;                <span class="keywordtype">int</span> isnewline = 1;</div><div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;                <span class="keywordflow">while</span> (fgets(line, <span class="keyword">sizeof</span>(line), fp) != NULL) {</div><div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                        <span class="keywordflow">if</span> (isnewline) {</div><div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;                                <span class="keywordflow">if</span> (line[strlen(line)-1] == <span class="charliteral">&#39;\n&#39;</span>) {</div><div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;                                        strip_line(line);</div><div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;                                        parse_line(line, linenum);</div><div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;                                } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;                                        isnewline = 0;</div><div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;                                }</div><div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;                        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(line[strlen(line)-1] == <span class="charliteral">&#39;\n&#39;</span>) {</div><div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;                                fprintf(stderr, <span class="stringliteral">&quot;%s: reading %s: line %i too long\n&quot;</span>, progname, FUSE_CONF, linenum);</div><div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;</div><div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;                                isnewline = 1;</div><div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;                        }</div><div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;                        <span class="keywordflow">if</span> (isnewline)</div><div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                                linenum ++;</div><div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                }</div><div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;                <span class="keywordflow">if</span> (!isnewline) {</div><div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: reading %s: missing newline at end of file\n&quot;</span>, progname, FUSE_CONF);</div><div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;</div><div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;                }</div><div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;                <span class="keywordflow">if</span> (ferror(fp)) {</div><div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: reading %s: read failed\n&quot;</span>, progname, FUSE_CONF);</div><div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;                        exit(1);</div><div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;                }</div><div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;                fclose(fp);</div><div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (errno != ENOENT) {</div><div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;                <span class="keywordtype">bool</span> fatal = (errno != EACCES &amp;&amp; errno != ELOOP &amp;&amp;</div><div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;                              errno != ENAMETOOLONG &amp;&amp; errno != ENOTDIR &amp;&amp;</div><div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;                              errno != EOVERFLOW);</div><div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>,</div><div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;                        progname, FUSE_CONF, strerror(errno));</div><div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                <span class="keywordflow">if</span> (fatal)</div><div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;                        exit(1);</div><div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;        }</div><div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;}</div><div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;</div><div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> begins_with(<span class="keyword">const</span> <span class="keywordtype">char</span> *s, <span class="keyword">const</span> <span class="keywordtype">char</span> *beg)</div><div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;{</div><div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;        <span class="keywordflow">if</span> (strncmp(s, beg, strlen(beg)) == 0)</div><div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;}</div><div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;</div><div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;<span class="keyword">struct </span>mount_flags {</div><div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *opt;</div><div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> flag;</div><div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;        <span class="keywordtype">int</span> on;</div><div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;        <span class="keywordtype">int</span> safe;</div><div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;};</div><div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;</div><div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;<span class="keyword">static</span> <span class="keyword">struct </span>mount_flags mount_flags[] = {</div><div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;        {<span class="stringliteral">&quot;rw&quot;</span>,      MS_RDONLY,      0, 1},</div><div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;        {<span class="stringliteral">&quot;ro&quot;</span>,      MS_RDONLY,      1, 1},</div><div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;        {<span class="stringliteral">&quot;suid&quot;</span>,    MS_NOSUID,      0, 0},</div><div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;        {<span class="stringliteral">&quot;nosuid&quot;</span>,  MS_NOSUID,      1, 1},</div><div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;        {<span class="stringliteral">&quot;dev&quot;</span>,     MS_NODEV,       0, 0},</div><div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;        {<span class="stringliteral">&quot;nodev&quot;</span>,   MS_NODEV,       1, 1},</div><div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;        {<span class="stringliteral">&quot;exec&quot;</span>,    MS_NOEXEC,      0, 1},</div><div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;        {<span class="stringliteral">&quot;noexec&quot;</span>,  MS_NOEXEC,      1, 1},</div><div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;        {<span class="stringliteral">&quot;async&quot;</span>,   MS_SYNCHRONOUS, 0, 1},</div><div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;        {<span class="stringliteral">&quot;sync&quot;</span>,    MS_SYNCHRONOUS, 1, 1},</div><div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;        {<span class="stringliteral">&quot;atime&quot;</span>,   MS_NOATIME,     0, 1},</div><div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;        {<span class="stringliteral">&quot;noatime&quot;</span>, MS_NOATIME,     1, 1},</div><div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;        {<span class="stringliteral">&quot;dirsync&quot;</span>, MS_DIRSYNC,     1, 1},</div><div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;        {NULL,      0,              0, 0}</div><div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;};</div><div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;</div><div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> find_mount_flag(<span class="keyword">const</span> <span class="keywordtype">char</span> *s, <span class="keywordtype">unsigned</span> len, <span class="keywordtype">int</span> *on, <span class="keywordtype">int</span> *flag)</div><div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;{</div><div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;        <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;</div><div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;        <span class="keywordflow">for</span> (i = 0; mount_flags[i].opt != NULL; i++) {</div><div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;                <span class="keyword">const</span> <span class="keywordtype">char</span> *opt = mount_flags[i].opt;</div><div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;                <span class="keywordflow">if</span> (strlen(opt) == len &amp;&amp; strncmp(opt, s, len) == 0) {</div><div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;                        *on = mount_flags[i].on;</div><div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;                        *flag = mount_flags[i].flag;</div><div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;                        <span class="keywordflow">if</span> (!mount_flags[i].safe &amp;&amp; getuid() != 0) {</div><div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;                                *flag = 0;</div><div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;                                fprintf(stderr,</div><div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;                                        <span class="stringliteral">&quot;%s: unsafe option %s ignored\n&quot;</span>,</div><div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;                                        progname, opt);</div><div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;                        }</div><div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;                        <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;                }</div><div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;        }</div><div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;}</div><div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;</div><div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> add_option(<span class="keywordtype">char</span> **optsp, <span class="keyword">const</span> <span class="keywordtype">char</span> *opt, <span class="keywordtype">unsigned</span> expand)</div><div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;{</div><div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;        <span class="keywordtype">char</span> *newopts;</div><div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;        <span class="keywordflow">if</span> (*optsp == NULL)</div><div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;                newopts = strdup(opt);</div><div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;        <span class="keywordflow">else</span> {</div><div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;                <span class="keywordtype">unsigned</span> oldsize = strlen(*optsp);</div><div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;                <span class="keywordtype">unsigned</span> newsize = oldsize + 1 + strlen(opt) + expand + 1;</div><div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;                newopts = (<span class="keywordtype">char</span> *) realloc(*optsp, newsize);</div><div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;                <span class="keywordflow">if</span> (newopts)</div><div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;                        sprintf(newopts + oldsize, <span class="stringliteral">&quot;,%s&quot;</span>, opt);</div><div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;        }</div><div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;        <span class="keywordflow">if</span> (newopts == NULL) {</div><div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;        }</div><div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;        *optsp = newopts;</div><div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;}</div><div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;</div><div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> get_mnt_opts(<span class="keywordtype">int</span> flags, <span class="keywordtype">char</span> *opts, <span class="keywordtype">char</span> **mnt_optsp)</div><div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;{</div><div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;        <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;        <span class="keywordtype">int</span> l;</div><div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;</div><div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;        <span class="keywordflow">if</span> (!(flags &amp; MS_RDONLY) &amp;&amp; add_option(mnt_optsp, <span class="stringliteral">&quot;rw&quot;</span>, 0) == -1)</div><div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;</div><div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;        <span class="keywordflow">for</span> (i = 0; mount_flags[i].opt != NULL; i++) {</div><div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;                <span class="keywordflow">if</span> (mount_flags[i].on &amp;&amp; (flags &amp; mount_flags[i].flag) &amp;&amp;</div><div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;                    add_option(mnt_optsp, mount_flags[i].opt, 0) == -1)</div><div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;        }</div><div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;</div><div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;        <span class="keywordflow">if</span> (add_option(mnt_optsp, opts, 0) == -1)</div><div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;        <span class="comment">/* remove comma from end of opts*/</span></div><div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;        l = strlen(*mnt_optsp);</div><div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;        <span class="keywordflow">if</span> ((*mnt_optsp)[l-1] == <span class="charliteral">&#39;,&#39;</span>)</div><div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;                (*mnt_optsp)[l-1] = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;        <span class="keywordflow">if</span> (getuid() != 0) {</div><div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;                <span class="keyword">const</span> <span class="keywordtype">char</span> *user = get_user_name();</div><div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;                <span class="keywordflow">if</span> (user == NULL)</div><div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;</div><div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;                <span class="keywordflow">if</span> (add_option(mnt_optsp, <span class="stringliteral">&quot;user=&quot;</span>, strlen(user)) == -1)</div><div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;                strcat(*mnt_optsp, user);</div><div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;        }</div><div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;}</div><div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;</div><div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> opt_eq(<span class="keyword">const</span> <span class="keywordtype">char</span> *s, <span class="keywordtype">unsigned</span> len, <span class="keyword">const</span> <span class="keywordtype">char</span> *opt)</div><div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;{</div><div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;        <span class="keywordflow">if</span>(strlen(opt) == len &amp;&amp; strncmp(s, opt, len) == 0)</div><div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;                <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;}</div><div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;</div><div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> get_string_opt(<span class="keyword">const</span> <span class="keywordtype">char</span> *s, <span class="keywordtype">unsigned</span> len, <span class="keyword">const</span> <span class="keywordtype">char</span> *opt,</div><div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;                          <span class="keywordtype">char</span> **val)</div><div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;{</div><div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;        <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;        <span class="keywordtype">unsigned</span> opt_len = strlen(opt);</div><div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;        <span class="keywordtype">char</span> *d;</div><div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;</div><div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;        <span class="keywordflow">if</span> (*val)</div><div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;                free(*val);</div><div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;        *val = (<span class="keywordtype">char</span> *) malloc(len - opt_len + 1);</div><div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;        <span class="keywordflow">if</span> (!*val) {</div><div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;        }</div><div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;</div><div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;        d = *val;</div><div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;        s += opt_len;</div><div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;        len -= opt_len;</div><div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;        <span class="keywordflow">for</span> (i = 0; i &lt; len; i++) {</div><div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;                <span class="keywordflow">if</span> (s[i] == <span class="charliteral">&#39;\\&#39;</span> &amp;&amp; i + 1 &lt; len)</div><div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;                        i++;</div><div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;                *d++ = s[i];</div><div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;        }</div><div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;        *d = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;        <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;}</div><div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;</div><div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;<span class="comment">/* The kernel silently truncates the &quot;data&quot; argument to PAGE_SIZE-1 characters.</span></div><div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;<span class="comment"> * This can be dangerous if it e.g. truncates the option &quot;group_id=1000&quot; to</span></div><div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;<span class="comment"> * &quot;group_id=1&quot;.</span></div><div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;<span class="comment"> * This wrapper detects this case and bails out with an error.</span></div><div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> mount_notrunc(<span class="keyword">const</span> <span class="keywordtype">char</span> *source, <span class="keyword">const</span> <span class="keywordtype">char</span> *target,</div><div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;                         <span class="keyword">const</span> <span class="keywordtype">char</span> *filesystemtype, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> mountflags,</div><div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;                         <span class="keyword">const</span> <span class="keywordtype">char</span> *data) {</div><div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;        <span class="keywordflow">if</span> (strlen(data) &gt; sysconf(_SC_PAGESIZE) - 1) {</div><div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: mount options too long\n&quot;</span>, progname);</div><div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;                errno = EINVAL;</div><div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;        }</div><div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;        <span class="keywordflow">return</span> mount(source, target, filesystemtype, mountflags, data);</div><div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;}</div><div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;</div><div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;</div><div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> do_mount(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> **typep, mode_t rootmode,</div><div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;                    <span class="keywordtype">int</span> fd, <span class="keyword">const</span> <span class="keywordtype">char</span> *opts, <span class="keyword">const</span> <span class="keywordtype">char</span> *dev, <span class="keywordtype">char</span> **sourcep,</div><div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;                    <span class="keywordtype">char</span> **mnt_optsp)</div><div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;{</div><div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;        <span class="keywordtype">int</span> flags = MS_NOSUID | MS_NODEV;</div><div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;        <span class="keywordtype">char</span> *optbuf;</div><div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;        <span class="keywordtype">char</span> *mnt_opts = NULL;</div><div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *s;</div><div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;        <span class="keywordtype">char</span> *d;</div><div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;        <span class="keywordtype">char</span> *fsname = NULL;</div><div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;        <span class="keywordtype">char</span> *subtype = NULL;</div><div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;        <span class="keywordtype">char</span> *source = NULL;</div><div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;        <span class="keywordtype">char</span> *type = NULL;</div><div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;        <span class="keywordtype">int</span> blkdev = 0;</div><div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;</div><div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;        optbuf = (<span class="keywordtype">char</span> *) malloc(strlen(opts) + 128);</div><div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;        <span class="keywordflow">if</span> (!optbuf) {</div><div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;        }</div><div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;</div><div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;        <span class="keywordflow">for</span> (s = opts, d = optbuf; *s;) {</div><div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;                <span class="keywordtype">unsigned</span> len;</div><div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;                <span class="keyword">const</span> <span class="keywordtype">char</span> *fsname_str = <span class="stringliteral">&quot;fsname=&quot;</span>;</div><div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;                <span class="keyword">const</span> <span class="keywordtype">char</span> *subtype_str = <span class="stringliteral">&quot;subtype=&quot;</span>;</div><div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;                <span class="keywordtype">bool</span> escape_ok = begins_with(s, fsname_str) ||</div><div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;                                 begins_with(s, subtype_str);</div><div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;                <span class="keywordflow">for</span> (len = 0; s[len]; len++) {</div><div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;                        <span class="keywordflow">if</span> (escape_ok &amp;&amp; s[len] == <span class="charliteral">&#39;\\&#39;</span> &amp;&amp; s[len + 1])</div><div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;                                len++;</div><div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;                        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s[len] == <span class="charliteral">&#39;,&#39;</span>)</div><div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;                                <span class="keywordflow">break</span>;</div><div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;                }</div><div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;                <span class="keywordflow">if</span> (begins_with(s, fsname_str)) {</div><div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;                        <span class="keywordflow">if</span> (!get_string_opt(s, len, fsname_str, &amp;fsname))</div><div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;                                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (begins_with(s, subtype_str)) {</div><div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;                        <span class="keywordflow">if</span> (!get_string_opt(s, len, subtype_str, &amp;subtype))</div><div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;                                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (opt_eq(s, len, <span class="stringliteral">&quot;blkdev&quot;</span>)) {</div><div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;                        <span class="keywordflow">if</span> (getuid() != 0) {</div><div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;                                fprintf(stderr,</div><div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;                                        <span class="stringliteral">&quot;%s: option blkdev is privileged\n&quot;</span>,</div><div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;                                        progname);</div><div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;                                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;                        }</div><div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;                        blkdev = 1;</div><div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (opt_eq(s, len, <span class="stringliteral">&quot;auto_unmount&quot;</span>)) {</div><div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;                        auto_unmount = 1;</div><div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!begins_with(s, <span class="stringliteral">&quot;fd=&quot;</span>) &amp;&amp;</div><div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;                           !begins_with(s, <span class="stringliteral">&quot;rootmode=&quot;</span>) &amp;&amp;</div><div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;                           !begins_with(s, <span class="stringliteral">&quot;user_id=&quot;</span>) &amp;&amp;</div><div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;                           !begins_with(s, <span class="stringliteral">&quot;group_id=&quot;</span>)) {</div><div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;                        <span class="keywordtype">int</span> on;</div><div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;                        <span class="keywordtype">int</span> flag;</div><div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;                        <span class="keywordtype">int</span> skip_option = 0;</div><div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;                        <span class="keywordflow">if</span> (opt_eq(s, len, <span class="stringliteral">&quot;large_read&quot;</span>)) {</div><div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;                                <span class="keyword">struct </span>utsname utsname;</div><div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;                                <span class="keywordtype">unsigned</span> kmaj, kmin;</div><div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;                                res = uname(&amp;utsname);</div><div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;                                <span class="keywordflow">if</span> (res == 0 &amp;&amp;</div><div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;                                    sscanf(utsname.release, <span class="stringliteral">&quot;%u.%u&quot;</span>,</div><div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;                                           &amp;kmaj, &amp;kmin) == 2 &amp;&amp;</div><div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;                                    (kmaj &gt; 2 || (kmaj == 2 &amp;&amp; kmin &gt; 4))) {</div><div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;                                        fprintf(stderr, <span class="stringliteral">&quot;%s: note: &#39;large_read&#39; mount option is deprecated for %i.%i kernels\n&quot;</span>, progname, kmaj, kmin);</div><div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;                                        skip_option = 1;</div><div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;                                }</div><div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;                        }</div><div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;                        <span class="keywordflow">if</span> (getuid() != 0 &amp;&amp; !user_allow_other &amp;&amp;</div><div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;                            (opt_eq(s, len, <span class="stringliteral">&quot;allow_other&quot;</span>) ||</div><div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;                             opt_eq(s, len, <span class="stringliteral">&quot;allow_root&quot;</span>))) {</div><div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;                                fprintf(stderr, <span class="stringliteral">&quot;%s: option %.*s only allowed if &#39;user_allow_other&#39; is set in %s\n&quot;</span>, progname, len, s, FUSE_CONF);</div><div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;                                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;                        }</div><div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;                        <span class="keywordflow">if</span> (!skip_option) {</div><div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;                                <span class="keywordflow">if</span> (find_mount_flag(s, len, &amp;on, &amp;flag)) {</div><div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;                                        <span class="keywordflow">if</span> (on)</div><div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;                                                flags |= flag;</div><div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;                                        <span class="keywordflow">else</span></div><div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;                                                flags  &amp;= ~flag;</div><div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;                                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (opt_eq(s, len, <span class="stringliteral">&quot;default_permissions&quot;</span>) ||</div><div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;                                           opt_eq(s, len, <span class="stringliteral">&quot;allow_other&quot;</span>) ||</div><div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;                                           begins_with(s, <span class="stringliteral">&quot;max_read=&quot;</span>) ||</div><div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;                                           begins_with(s, <span class="stringliteral">&quot;blksize=&quot;</span>)) {</div><div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;                                        memcpy(d, s, len);</div><div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;                                        d += len;</div><div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;                                        *d++ = <span class="charliteral">&#39;,&#39;</span>;</div><div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;                                } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;                                        fprintf(stderr, <span class="stringliteral">&quot;%s: unknown option &#39;%.*s&#39;\n&quot;</span>, progname, len, s);</div><div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;                                        exit(1);</div><div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;                                }</div><div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;                        }</div><div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;                }</div><div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;                s += len;</div><div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;                <span class="keywordflow">if</span> (*s)</div><div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;                        s++;</div><div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;        }</div><div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;        *d = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;        res = get_mnt_opts(flags, optbuf, &amp;mnt_opts);</div><div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;</div><div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;        sprintf(d, <span class="stringliteral">&quot;fd=%i,rootmode=%o,user_id=%u,group_id=%u&quot;</span>,</div><div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;                fd, rootmode, getuid(), getgid());</div><div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;</div><div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;        source = malloc((fsname ? strlen(fsname) : 0) +</div><div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;                        (subtype ? strlen(subtype) : 0) + strlen(dev) + 32);</div><div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;</div><div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;        type = malloc((subtype ? strlen(subtype) : 0) + 32);</div><div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;        <span class="keywordflow">if</span> (!type || !source) {</div><div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;        }</div><div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;</div><div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;        <span class="keywordflow">if</span> (subtype)</div><div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;                sprintf(type, <span class="stringliteral">&quot;%s.%s&quot;</span>, blkdev ? <span class="stringliteral">&quot;fuseblk&quot;</span> : <span class="stringliteral">&quot;fuse&quot;</span>, subtype);</div><div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;                strcpy(type, blkdev ? <span class="stringliteral">&quot;fuseblk&quot;</span> : <span class="stringliteral">&quot;fuse&quot;</span>);</div><div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;</div><div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;        <span class="keywordflow">if</span> (fsname)</div><div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;                strcpy(source, fsname);</div><div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;                strcpy(source, subtype ? subtype : dev);</div><div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;</div><div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;        res = mount_notrunc(source, mnt, type, flags, optbuf);</div><div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;        <span class="keywordflow">if</span> (res == -1 &amp;&amp; errno == ENODEV &amp;&amp; subtype) {</div><div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;                <span class="comment">/* Probably missing subtype support */</span></div><div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;                strcpy(type, blkdev ? <span class="stringliteral">&quot;fuseblk&quot;</span> : <span class="stringliteral">&quot;fuse&quot;</span>);</div><div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;                <span class="keywordflow">if</span> (fsname) {</div><div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;                        <span class="keywordflow">if</span> (!blkdev)</div><div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;                                sprintf(source, <span class="stringliteral">&quot;%s#%s&quot;</span>, subtype, fsname);</div><div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;                } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;                        strcpy(source, type);</div><div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;                }</div><div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;</div><div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;                res = mount_notrunc(source, mnt, type, flags, optbuf);</div><div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;        }</div><div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;        <span class="keywordflow">if</span> (res == -1 &amp;&amp; errno == EINVAL) {</div><div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;                <span class="comment">/* It could be an old version not supporting group_id */</span></div><div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;                sprintf(d, <span class="stringliteral">&quot;fd=%i,rootmode=%o,user_id=%u&quot;</span>,</div><div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;                        fd, rootmode, getuid());</div><div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;                res = mount_notrunc(source, mnt, type, flags, optbuf);</div><div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;        }</div><div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;                <span class="keywordtype">int</span> errno_save = errno;</div><div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;                <span class="keywordflow">if</span> (blkdev &amp;&amp; errno == ENODEV &amp;&amp; !fuse_mnt_check_fuseblk())</div><div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: &#39;fuseblk&#39; support missing\n&quot;</span>,</div><div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;                                progname);</div><div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;                <span class="keywordflow">else</span></div><div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: mount failed: %s\n&quot;</span>, progname,</div><div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;                                strerror(errno_save));</div><div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;                <span class="keywordflow">goto</span> err;</div><div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;        }</div><div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;        *sourcep = source;</div><div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;        *typep = type;</div><div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;        *mnt_optsp = mnt_opts;</div><div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;        free(fsname);</div><div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;        free(optbuf);</div><div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;</div><div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;</div><div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;err:</div><div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;        free(fsname);</div><div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;        free(subtype);</div><div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;        free(source);</div><div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;        free(type);</div><div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;        free(mnt_opts);</div><div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;        free(optbuf);</div><div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;}</div><div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160;</div><div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> check_perm(<span class="keyword">const</span> <span class="keywordtype">char</span> **mntp, <span class="keyword">struct</span> stat *stbuf, <span class="keywordtype">int</span> *mountpoint_fd)</div><div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;{</div><div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *mnt = *mntp;</div><div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *origmnt = mnt;</div><div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;        <span class="keyword">struct </span>statfs fs_buf;</div><div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;        <span class="keywordtype">size_t</span> i;</div><div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;</div><div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;        res = lstat(mnt, stbuf);</div><div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to access mountpoint %s: %s\n&quot;</span>,</div><div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;                        progname, mnt, strerror(errno));</div><div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;        }</div><div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;</div><div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;        <span class="comment">/* No permission checking is done for root */</span></div><div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;        <span class="keywordflow">if</span> (getuid() == 0)</div><div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160;</div><div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;        <span class="keywordflow">if</span> (S_ISDIR(stbuf-&gt;st_mode)) {</div><div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;                res = chdir(mnt);</div><div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160;                                <span class="stringliteral">&quot;%s: failed to chdir to mountpoint: %s\n&quot;</span>,</div><div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;                                progname, strerror(errno));</div><div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;                }</div><div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;                mnt = *mntp = <span class="stringliteral">&quot;.&quot;</span>;</div><div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;                res = lstat(mnt, stbuf);</div><div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;                                <span class="stringliteral">&quot;%s: failed to access mountpoint %s: %s\n&quot;</span>,</div><div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;                                progname, origmnt, strerror(errno));</div><div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;                }</div><div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;</div><div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;                <span class="keywordflow">if</span> ((stbuf-&gt;st_mode &amp; S_ISVTX) &amp;&amp; stbuf-&gt;st_uid != getuid()) {</div><div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: mountpoint %s not owned by user\n&quot;</span>,</div><div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;                                progname, origmnt);</div><div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;                }</div><div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;</div><div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;                res = access(mnt, W_OK);</div><div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: user has no write access to mountpoint %s\n&quot;</span>,</div><div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;                                progname, origmnt);</div><div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;                }</div><div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (S_ISREG(stbuf-&gt;st_mode)) {</div><div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;                <span class="keyword">static</span> <span class="keywordtype">char</span> procfile[256];</div><div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;                *mountpoint_fd = open(mnt, O_WRONLY);</div><div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160;                <span class="keywordflow">if</span> (*mountpoint_fd == -1) {</div><div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>,</div><div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;                                progname, mnt, strerror(errno));</div><div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160;                }</div><div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;                res = fstat(*mountpoint_fd, stbuf);</div><div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;                                <span class="stringliteral">&quot;%s: failed to access mountpoint %s: %s\n&quot;</span>,</div><div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;                                progname, mnt, strerror(errno));</div><div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;                }</div><div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;                <span class="keywordflow">if</span> (!S_ISREG(stbuf-&gt;st_mode)) {</div><div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;                                <span class="stringliteral">&quot;%s: mountpoint %s is no longer a regular file\n&quot;</span>,</div><div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;                                progname, mnt);</div><div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;                        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;                }</div><div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;</div><div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;                sprintf(procfile, <span class="stringliteral">&quot;/proc/self/fd/%i&quot;</span>, *mountpoint_fd);</div><div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;                *mntp = procfile;</div><div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;                fprintf(stderr,</div><div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;                        <span class="stringliteral">&quot;%s: mountpoint %s is not a directory or a regular file\n&quot;</span>,</div><div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;                        progname, mnt);</div><div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;        }</div><div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;</div><div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;        <span class="comment">/* Do not permit mounting over anything in procfs - it has a couple</span></div><div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;<span class="comment">         * places to which we have &quot;write access&quot; without being supposed to be</span></div><div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;<span class="comment">         * able to just put anything we want there.</span></div><div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;<span class="comment">         * Luckily, without allow_other, we can&#39;t get other users to actually</span></div><div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;<span class="comment">         * use any fake information we try to put there anyway.</span></div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;<span class="comment">         * Use a whitelist to be safe. */</span></div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;        <span class="keywordflow">if</span> (statfs(*mntp, &amp;fs_buf)) {</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to access mountpoint %s: %s\n&quot;</span>,</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160;                        progname, mnt, strerror(errno));</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;        }</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;        <span class="comment">/* Define permitted filesystems for the mount target. This was</span></div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;<span class="comment">         * originally the same list as used by the ecryptfs mount helper</span></div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;<span class="comment">         * (https://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/view/head:/src/utils/mount.ecryptfs_private.c#L225)</span></div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;<span class="comment">         * but got expanded as we found more filesystems that needed to be</span></div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;<span class="comment">         * overlayed. */</span></div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;        typeof(fs_buf.f_type) f_type_whitelist[] = {</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;                0x61756673 <span class="comment">/* AUFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;                0x00000187 <span class="comment">/* AUTOFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;                0xCA451A4E <span class="comment">/* BCACHEFS_STATFS_MAGIC */</span>,</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;                0x9123683E <span class="comment">/* BTRFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;                0x00C36400 <span class="comment">/* CEPH_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;                0xFF534D42 <span class="comment">/* CIFS_MAGIC_NUMBER */</span>,</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;                0X00004D44 <span class="comment">/* MSDOS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;                0x0000F15F <span class="comment">/* ECRYPTFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;                0x0000EF53 <span class="comment">/* EXT[234]_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;                0xF2F52010 <span class="comment">/* F2FS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;                0x65735546 <span class="comment">/* FUSE_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;                0x01161970 <span class="comment">/* GFS2_MAGIC */</span>,</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;                0x47504653 <span class="comment">/* GPFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;                0x3153464A <span class="comment">/* JFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;                0x000072B6 <span class="comment">/* JFFS2_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;                0x0BD00BD0 <span class="comment">/* LL_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;                0x0000564C <span class="comment">/* NCP_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;                0x00006969 <span class="comment">/* NFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;                0x00003434 <span class="comment">/* NILFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;                0x5346544E <span class="comment">/* NTFS_SB_MAGIC */</span>,</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;                0x794C7630 <span class="comment">/* OVERLAYFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;                0x52654973 <span class="comment">/* REISERFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;                0x73717368 <span class="comment">/* SQUASHFS_MAGIC */</span>,</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;                0x01021994 <span class="comment">/* TMPFS_MAGIC */</span>,</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;                0x24051905 <span class="comment">/* UBIFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;                0x58465342 <span class="comment">/* XFS_SB_MAGIC */</span>,</div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;                0x2FC12FC1 <span class="comment">/* ZFS_SUPER_MAGIC */</span>,</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;        };</div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;        <span class="keywordflow">for</span> (i = 0; i &lt; <span class="keyword">sizeof</span>(f_type_whitelist)/<span class="keyword">sizeof</span>(f_type_whitelist[0]); i++) {</div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;                <span class="keywordflow">if</span> (f_type_whitelist[i] == fs_buf.f_type)</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;                        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;        }</div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;</div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;%s: mounting over filesystem type %#010lx is forbidden\n&quot;</span>,</div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;                progname, (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)fs_buf.f_type);</div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;}</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;</div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> try_open(<span class="keyword">const</span> <span class="keywordtype">char</span> *dev, <span class="keywordtype">char</span> **devp, <span class="keywordtype">int</span> silent)</div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;{</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160;        <span class="keywordtype">int</span> fd = open(dev, O_RDWR);</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;        <span class="keywordflow">if</span> (fd != -1) {</div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;                *devp = strdup(dev);</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;                <span class="keywordflow">if</span> (*devp == NULL) {</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>,</div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;                                progname);</div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;                        close(fd);</div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;                        fd = -1;</div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;                }</div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (errno == ENODEV ||</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;                   errno == ENOENT)<span class="comment">/* check for ENOENT too, for the udev case */</span></div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;                <span class="keywordflow">return</span> -2;</div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!silent) {</div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to open %s: %s\n&quot;</span>, progname, dev,</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;                        strerror(errno));</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;        }</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;        <span class="keywordflow">return</span> fd;</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;}</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> try_open_fuse_device(<span class="keywordtype">char</span> **devp)</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;{</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;        <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;        drop_privs();</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;        fd = try_open(FUSE_DEV, devp, 0);</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;        restore_privs();</div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;        <span class="keywordflow">return</span> fd;</div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;}</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> open_fuse_device(<span class="keywordtype">char</span> **devp)</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;{</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;        <span class="keywordtype">int</span> fd = try_open_fuse_device(devp);</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;        <span class="keywordflow">if</span> (fd &gt;= -1)</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;                <span class="keywordflow">return</span> fd;</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;        fprintf(stderr,</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;                <span class="stringliteral">&quot;%s: fuse device not found, try &#39;modprobe fuse&#39; first\n&quot;</span>,</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;                progname);</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;</div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;}</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160;</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> mount_fuse(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> *opts, <span class="keyword">const</span> <span class="keywordtype">char</span> **type)</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;{</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;        <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;        <span class="keywordtype">char</span> *dev;</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;        <span class="keyword">struct </span>stat stbuf;</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;        <span class="keywordtype">char</span> *source = NULL;</div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;        <span class="keywordtype">char</span> *mnt_opts = NULL;</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *real_mnt = mnt;</div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;        <span class="keywordtype">int</span> mountpoint_fd = -1;</div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;        fd = open_fuse_device(&amp;dev);</div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;        <span class="keywordflow">if</span> (fd == -1)</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160;</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;        drop_privs();</div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;        read_conf();</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;</div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160;        <span class="keywordflow">if</span> (getuid() != 0 &amp;&amp; mount_max != -1) {</div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;                <span class="keywordtype">int</span> mount_count = count_fuse_fs();</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;                <span class="keywordflow">if</span> (mount_count &gt;= mount_max) {</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: too many FUSE filesystems mounted; mount_max=N can be set in %s\n&quot;</span>, progname, FUSE_CONF);</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;                        <span class="keywordflow">goto</span> fail_close_fd;</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;                }</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;        }</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;        res = check_perm(&amp;real_mnt, &amp;stbuf, &amp;mountpoint_fd);</div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;        restore_privs();</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;        <span class="keywordflow">if</span> (res != -1)</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;                res = do_mount(real_mnt, type, stbuf.st_mode &amp; S_IFMT,</div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;                               fd, opts, dev, &amp;source, &amp;mnt_opts);</div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;</div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;        <span class="keywordflow">if</span> (mountpoint_fd != -1)</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;                close(mountpoint_fd);</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;                <span class="keywordflow">goto</span> fail_close_fd;</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160;</div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;        res = chdir(<span class="stringliteral">&quot;/&quot;</span>);</div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to chdir to &#39;/&#39;\n&quot;</span>, progname);</div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160;                <span class="keywordflow">goto</span> fail_close_fd;</div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;        }</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160;        <span class="keywordflow">if</span> (geteuid() == 0) {</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160;                res = add_mount(source, mnt, *type, mnt_opts);</div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160;                        <span class="comment">/* Can&#39;t clean up mount in a non-racy way */</span></div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160;                        <span class="keywordflow">goto</span> fail_close_fd;</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160;                }</div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160;        }</div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;out_free:</div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160;        free(source);</div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160;        free(mnt_opts);</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160;        free(dev);</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160;</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160;        <span class="keywordflow">return</span> fd;</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160;</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;fail_close_fd:</div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160;        close(fd);</div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160;        fd = -1;</div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160;        <span class="keywordflow">goto</span> out_free;</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160;}</div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160;</div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> send_fd(<span class="keywordtype">int</span> sock_fd, <span class="keywordtype">int</span> fd)</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160;{</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;        <span class="keywordtype">int</span> retval;</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;        <span class="keyword">struct </span>msghdr msg;</div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;        <span class="keyword">struct </span>cmsghdr *p_cmsg;</div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160;        <span class="keyword">struct </span>iovec vec;</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>&#160;        <span class="keywordtype">size_t</span> cmsgbuf[CMSG_SPACE(<span class="keyword">sizeof</span>(fd)) / <span class="keyword">sizeof</span>(size_t)];</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160;        <span class="keywordtype">int</span> *p_fds;</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160;        <span class="keywordtype">char</span> sendchar = 0;</div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160;</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;        msg.msg_control = cmsgbuf;</div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160;        msg.msg_controllen = <span class="keyword">sizeof</span>(cmsgbuf);</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160;        p_cmsg = CMSG_FIRSTHDR(&amp;msg);</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160;        p_cmsg-&gt;cmsg_level = SOL_SOCKET;</div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160;        p_cmsg-&gt;cmsg_type = SCM_RIGHTS;</div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;        p_cmsg-&gt;cmsg_len = CMSG_LEN(<span class="keyword">sizeof</span>(fd));</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160;        p_fds = (<span class="keywordtype">int</span> *) CMSG_DATA(p_cmsg);</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160;        *p_fds = fd;</div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160;        msg.msg_controllen = p_cmsg-&gt;cmsg_len;</div><div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160;        msg.msg_name = NULL;</div><div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160;        msg.msg_namelen = 0;</div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;        msg.msg_iov = &amp;vec;</div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160;        msg.msg_iovlen = 1;</div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160;        msg.msg_flags = 0;</div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160;        <span class="comment">/* &quot;To pass file descriptors or credentials you need to send/read at</span></div><div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160;<span class="comment">         * least one byte&quot; (man 7 unix) */</span></div><div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;        vec.iov_base = &amp;sendchar;</div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160;        vec.iov_len = <span class="keyword">sizeof</span>(sendchar);</div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;        <span class="keywordflow">while</span> ((retval = sendmsg(sock_fd, &amp;msg, 0)) == -1 &amp;&amp; errno == EINTR);</div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>&#160;        <span class="keywordflow">if</span> (retval != 1) {</div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>&#160;                perror(<span class="stringliteral">&quot;sending file descriptor&quot;</span>);</div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>&#160;                <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>&#160;        }</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>&#160;}</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>&#160;</div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>&#160;<span class="comment">/* The parent fuse process has died: decide whether to auto_unmount.</span></div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>&#160;<span class="comment"> * In the normal case (umount or fusermount -u), the filesystem</span></div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>&#160;<span class="comment"> * has already been unmounted. If we simply unmount again we can</span></div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>&#160;<span class="comment"> * cause problems with stacked mounts (e.g. autofs).</span></div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>&#160;<span class="comment"> * So we unmount here only in abnormal case where fuse process has</span></div><div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>&#160;<span class="comment"> * died without unmount happening. To detect this, we first look in</span></div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>&#160;<span class="comment"> * the mount table to make sure the mountpoint is still mounted and</span></div><div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>&#160;<span class="comment"> * has proper type. If so, we then see if opening the mount dir is</span></div><div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>&#160;<span class="comment"> * returning &#39;Transport endpoint is not connected&#39;.</span></div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>&#160;<span class="comment"> * The order of these is important, because if autofs is in use,</span></div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>&#160;<span class="comment"> * opening the dir to check for ENOTCONN will cause a new mount</span></div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>&#160;<span class="comment"> * in the normal case where filesystem has been unmounted cleanly.</span></div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> should_auto_unmount(<span class="keyword">const</span> <span class="keywordtype">char</span> *mnt, <span class="keyword">const</span> <span class="keywordtype">char</span> *type)</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>&#160;{</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>&#160;        <span class="keywordtype">char</span> *copy;</div><div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *last;</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>&#160;        <span class="keywordtype">int</span> result = 0;</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>&#160;        <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>&#160;</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>&#160;        copy = strdup(mnt);</div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>&#160;        <span class="keywordflow">if</span> (copy == NULL) {</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, progname);</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>&#160;        }</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>&#160;</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>&#160;        <span class="keywordflow">if</span> (chdir_to_parent(copy, &amp;last) == -1)</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>&#160;                <span class="keywordflow">goto</span> out;</div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>&#160;        <span class="keywordflow">if</span> (check_is_mount(last, mnt, type) == -1)</div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>&#160;                <span class="keywordflow">goto</span> out;</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>&#160;</div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>&#160;        fd = open(mnt, O_RDONLY);</div><div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>&#160;        <span class="keywordflow">if</span> (fd != -1) {</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>&#160;                close(fd);</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>&#160;                result = errno == ENOTCONN;</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>&#160;        }</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>&#160;out:</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>&#160;        free(copy);</div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>&#160;        <span class="keywordflow">return</span> result;</div><div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>&#160;}</div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>&#160;</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> usage(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>&#160;{</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>&#160;        printf(<span class="stringliteral">&quot;%s: [options] mountpoint\n&quot;</span></div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>&#160;               <span class="stringliteral">&quot;Options:\n&quot;</span></div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>&#160;               <span class="stringliteral">&quot; -h                 print help\n&quot;</span></div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>&#160;               <span class="stringliteral">&quot; -V                 print version\n&quot;</span></div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>&#160;               <span class="stringliteral">&quot; -o opt[,opt...]   mount options\n&quot;</span></div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>&#160;               <span class="stringliteral">&quot; -u                 unmount\n&quot;</span></div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>&#160;               <span class="stringliteral">&quot; -q                 quiet\n&quot;</span></div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>&#160;               <span class="stringliteral">&quot; -z                 lazy unmount\n&quot;</span>,</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>&#160;               progname);</div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>&#160;        exit(1);</div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>&#160;}</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>&#160;</div><div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> show_version(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>&#160;{</div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>&#160;        printf(<span class="stringliteral">&quot;fusermount3 version: %s\n&quot;</span>, PACKAGE_VERSION);</div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>&#160;        exit(0);</div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>&#160;}</div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>&#160;</div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>&#160;<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[])</div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>&#160;{</div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>&#160;        sigset_t sigset;</div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>&#160;        <span class="keywordtype">int</span> ch;</div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>&#160;        <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>&#160;        <span class="keywordtype">int</span> res;</div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>&#160;        <span class="keywordtype">char</span> *origmnt;</div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>&#160;        <span class="keywordtype">char</span> *mnt;</div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">int</span> unmount = 0;</div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">int</span> lazy = 0;</div><div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">int</span> quiet = 0;</div><div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>&#160;        <span class="keywordtype">char</span> *commfd;</div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>&#160;        <span class="keywordtype">int</span> cfd;</div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *opts = <span class="stringliteral">&quot;&quot;</span>;</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *type = NULL;</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>&#160;</div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>&#160;        <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>option long_opts[] = {</div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>&#160;                {<span class="stringliteral">&quot;unmount&quot;</span>, no_argument, NULL, <span class="charliteral">&#39;u&#39;</span>},</div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>&#160;                {<span class="stringliteral">&quot;lazy&quot;</span>,    no_argument, NULL, <span class="charliteral">&#39;z&#39;</span>},</div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>&#160;                {<span class="stringliteral">&quot;quiet&quot;</span>,   no_argument, NULL, <span class="charliteral">&#39;q&#39;</span>},</div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>&#160;                {<span class="stringliteral">&quot;help&quot;</span>,    no_argument, NULL, <span class="charliteral">&#39;h&#39;</span>},</div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>&#160;                {<span class="stringliteral">&quot;version&quot;</span>, no_argument, NULL, <span class="charliteral">&#39;V&#39;</span>},</div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>&#160;                {0, 0, 0, 0}};</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>&#160;</div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>&#160;        progname = strdup(argv[0]);</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>&#160;        <span class="keywordflow">if</span> (progname == NULL) {</div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to allocate memory\n&quot;</span>, argv[0]);</div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>&#160;                exit(1);</div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>&#160;        }</div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>&#160;</div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>&#160;        <span class="keywordflow">while</span> ((ch = getopt_long(argc, argv, <span class="stringliteral">&quot;hVo:uzq&quot;</span>, long_opts,</div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>&#160;                                 NULL)) != -1) {</div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>&#160;                <span class="keywordflow">switch</span> (ch) {</div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;h&#39;</span>:</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>&#160;                        usage();</div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>&#160;</div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;V&#39;</span>:</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>&#160;                        show_version();</div><div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>&#160;</div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;o&#39;</span>:</div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>&#160;                        opts = optarg;</div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>&#160;</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;u&#39;</span>:</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>&#160;                        unmount = 1;</div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>&#160;</div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;z&#39;</span>:</div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>&#160;                        lazy = 1;</div><div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>&#160;</div><div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>&#160;                <span class="keywordflow">case</span> <span class="charliteral">&#39;q&#39;</span>:</div><div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>&#160;                        quiet = 1;</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>&#160;</div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>&#160;                <span class="keywordflow">default</span>:</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>&#160;                        exit(1);</div><div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>&#160;                }</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>&#160;        }</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>&#160;</div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>&#160;        <span class="keywordflow">if</span> (lazy &amp;&amp; !unmount) {</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: -z can only be used with -u\n&quot;</span>, progname);</div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>&#160;                exit(1);</div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>&#160;        }</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>&#160;</div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>&#160;        <span class="keywordflow">if</span> (optind &gt;= argc) {</div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: missing mountpoint argument\n&quot;</span>, progname);</div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>&#160;                exit(1);</div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (argc &gt; optind + 1) {</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: extra arguments after the mountpoint\n&quot;</span>,</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>&#160;                        progname);</div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>&#160;                exit(1);</div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>&#160;        }</div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>&#160;</div><div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>&#160;        origmnt = argv[optind];</div><div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>&#160;</div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>&#160;        drop_privs();</div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>&#160;        mnt = fuse_mnt_resolve_path(progname, origmnt);</div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>&#160;        <span class="keywordflow">if</span> (mnt != NULL) {</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>&#160;                res = chdir(<span class="stringliteral">&quot;/&quot;</span>);</div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>&#160;                <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>&#160;                        fprintf(stderr, <span class="stringliteral">&quot;%s: failed to chdir to &#39;/&#39;\n&quot;</span>, progname);</div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>&#160;                        <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>&#160;                }</div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>&#160;        }</div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>&#160;        restore_privs();</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>&#160;        <span class="keywordflow">if</span> (mnt == NULL)</div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>&#160;                exit(1);</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>&#160;</div><div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>&#160;        umask(033);</div><div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>&#160;        <span class="keywordflow">if</span> (unmount)</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>&#160;                <span class="keywordflow">goto</span> do_unmount;</div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>&#160;</div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>&#160;        commfd = getenv(FUSE_COMMFD_ENV);</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>&#160;        <span class="keywordflow">if</span> (commfd == NULL) {</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: old style mounting not supported\n&quot;</span>,</div><div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>&#160;                        progname);</div><div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>&#160;                <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>&#160;        }</div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>&#160;</div><div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>&#160;        fd = mount_fuse(mnt, opts, &amp;type);</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>&#160;        <span class="keywordflow">if</span> (fd == -1)</div><div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>&#160;                <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>&#160;</div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>&#160;        cfd = atoi(commfd);</div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>&#160;        res = send_fd(cfd, fd);</div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>&#160;                <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>&#160;        close(fd);</div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>&#160;</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>&#160;        <span class="keywordflow">if</span> (!auto_unmount) {</div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>&#160;                free(mnt);</div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>&#160;                <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>&#160;        }</div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>&#160;</div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>&#160;        <span class="comment">/* Become a daemon and wait for the parent to exit or die.</span></div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>&#160;<span class="comment">           ie For the control socket to get closed.</span></div><div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>&#160;<span class="comment">           btw We don&#39;t want to use daemon() function here because</span></div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>&#160;<span class="comment">           it forks and messes with the file descriptors. */</span></div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>&#160;        setsid();</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>&#160;        res = chdir(<span class="stringliteral">&quot;/&quot;</span>);</div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>&#160;        <span class="keywordflow">if</span> (res == -1) {</div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>&#160;                fprintf(stderr, <span class="stringliteral">&quot;%s: failed to chdir to &#39;/&#39;\n&quot;</span>, progname);</div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>&#160;                <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>&#160;        }</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>&#160;</div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>&#160;        sigfillset(&amp;sigset);</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>&#160;        sigprocmask(SIG_BLOCK, &amp;sigset, NULL);</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>&#160;</div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>&#160;        lazy  = 1;</div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>&#160;        quiet = 1;</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>&#160;</div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>&#160;        <span class="keywordflow">while</span> (1) {</div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>&#160;                <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> buf[16];</div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>&#160;                <span class="keywordtype">int</span> n = recv(cfd, buf, <span class="keyword">sizeof</span>(buf), 0);</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>&#160;                <span class="keywordflow">if</span> (!n)</div><div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>&#160;</div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>&#160;                <span class="keywordflow">if</span> (n &lt; 0) {</div><div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>&#160;                        <span class="keywordflow">if</span> (errno == EINTR)</div><div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>&#160;                                <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>&#160;                        <span class="keywordflow">break</span>;</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>&#160;                }</div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>&#160;        }</div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>&#160;</div><div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>&#160;        <span class="keywordflow">if</span> (!should_auto_unmount(mnt, type)) {</div><div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>&#160;                <span class="keywordflow">goto</span> success_out;</div><div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>&#160;        }</div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>&#160;</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>&#160;do_unmount:</div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>&#160;        <span class="keywordflow">if</span> (geteuid() == 0)</div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>&#160;                res = unmount_fuse(mnt, quiet, lazy);</div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>&#160;        <span class="keywordflow">else</span> {</div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>&#160;                res = umount2(mnt, lazy ? UMOUNT_DETACH : 0);</div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>&#160;                <span class="keywordflow">if</span> (res == -1 &amp;&amp; !quiet)</div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>&#160;                        fprintf(stderr,</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>&#160;                                <span class="stringliteral">&quot;%s: failed to unmount %s: %s\n&quot;</span>,</div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>&#160;                                progname, mnt, strerror(errno));</div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>&#160;        }</div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>&#160;        <span class="keywordflow">if</span> (res == -1)</div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>&#160;                <span class="keywordflow">goto</span> err_out;</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>&#160;</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>&#160;success_out:</div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>&#160;        free(mnt);</div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>&#160;</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>&#160;err_out:</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>&#160;        free(mnt);</div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>&#160;        exit(1);</div><div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>&#160;}</div></div><!-- fragment --></div><!-- contents -->
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